Can I tell you all how much I love the Bakerella blog? She is wonderful! I've found lots of tips and great recipes. She is really a great resource. I recently made her Key Lime Cream Cake and it was heavenly. It was so good, I looked for an excuse to make it again just a couple of weeks later. Here's her blog about it. You should all try it because it's divine. http://www.bakerella.com/key-lime-cream-cake/comment-page-7/
On a side note, I went ahead and put lime juice and extra sugar in the frosting recipe (as she suggests). I also didn't need as much frosting as the recipe makes (though you could certainly use the extra on other things). The second time I made it I only made a 3/4 recipe of frosting.